Burner



' erence marked therein,

srAT s PAENT oFFIcE.

MAURICE KATHY, 0F LIEGE, BELGIUM.

BURNER.

Application filed June 26.

To all whom it may concern:

Be it known that I, MAURICE MATHY, manufacturer, a subject of the King of Belgium, and resident of Belgium, have invented certain new and useful Improvements in Burners: and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will erratic others skilled in the art to which it appertains to make and use the same, reference being had the accompanying drawing, and to letters or which form a part of this specification.

In known burners for flam'eless con'ibustion a mixture of air and gas is passed through a diaphragm of porous refractory material or else through a chamber containmg granules of porous refractory material.

' precedes l specification show by he system exhibits the following disad vantages: p

In view of the fact that the mixture of air and gas is brought into the presence of material heated'to a high temperature, explosionsmay take place.

At other times the mixture of air and gas ites before entering the porous mass, all the .advani w 1ch not merely destroys tages of the system but may also be a cause of accidents.

oreover in this known system of flameless combustion it is impossible, without still further increasing to a' considerable extent the disadvantages .pointed out above, to

benefit by-the known advantages resulting 'flil'om the preliminary'heating of the air and t e as. o

Al these disadvantages-are obviated by the system forming the subject-matter of the' present patent by mixin the air and the gas in a chamber filled wit porous refractory material, the air and the gas being introduced separately into this chamber, which the combustion chamber proper, which is filled, as usual, with porous refractory. material, or consists of a plate of porous refractory material.

he drawings accompanying the present way of example two constructional, forms of the invention. In t, ese drawings: igure 1 is a cross section through one of the constructional forms.

ig. 2 is a cross section through the second constructional form.

- In the case-of Fig. 1 the granules 1 of Specification of Letters Patent.

of Liege, in the Kingdom figures of refthe material; said chamber having Patented Feb. 17, 192d.

1919. Serial No. 307,031.

porous refractory material cylindrical chamber 2.

Air is admitted through a passage 3, the axis of which coincides with that of the chamber 2, and gas is admitted through a passage 4 adjacent to the passage 3 and at right angles thereto.

The mixing of the air and gas is effected A of the chamber 2, while the combustion-takes place in the part B. In example shown in Fig. 1 this second includes a plate of porous refractory material serving to keep the granules in the chamber. i

In the case of Fig. 2 the chamber 5, containing the porous material, is in the shape of a truncated cone, the upper part being the larger. The gas is led to the upper part of this chamber through pipes such as 6 and 7. Air is ledthrough th which coincides with The mouth by which are placed in a that of the chamber 5. the pipe 9 opens into chamber 5 is constructed in such a way that the current of air is divided into streams upon entering the chamber. To this end a plate 9 forming the lower base of the cham-' ber 5 and the ceiling of the widened extremity 11 of the dial-openings 10. These openings may arranged, as shown, in the plane of the corresponding gas-supply pipe, or else between two of these consecutlve pipes.

The mixing -of the air and upper part of this chamber.

Experiment proves that air and gas may, by means of the device forming the subjectmatter' of the present invention, be preheated to a very high temperature without running the slightest risk, of explosion or of premature combustion.

at I claim is:

l. A surface combustion burner, comprising a chamber filled with porous, refractory at one end thereof an openin for the products of combustion, and at t e opposite end thereof separate inlet openings for the air and gas which are spaced from each other in the wall of the chamber,whereby the mixing of the air and gas will take place within said chamber adjacent the last-named. end, while combustion takes place adjacent the first-named end.

2. A surface combustion burner, comprispipe 8, is pierced with rae pipe 8, the axis of ing a chamber filled with porous refractory 'material; said chamber ha ing at one end thereof an openingfor the products of combustion; and separate air and gas supply :pipes opening through the opposite end of said chamber and having their delivery ends spaced apart from each other,

10 end, while combustion takes place adjacent the first-named end; the air supply pipe being disposed coaxially with said chamber and at an angle to the gas supply pipe.

- In testimony whereof I aifix my signature in resence of two witnesses.

MAURICE MATHY.

Witnesses: I

LEONARD LERU, GEORGES VANDER HAEGEN. 

